Abiotic Stress in Crop Production

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(7), P. 6603 - 6603

Published: April 1, 2023

The vast majority of agricultural land undergoes abiotic stress that can significantly reduce yields. Understanding the mechanisms plant defenses against stresses and putting this knowledge into practice is, therefore, an integral part sustainable agriculture. In review, we focus on current findings in resistance to four cardinal stressors-drought, heat, salinity, low temperatures. Apart from description newly discovered signaling stress, review also focuses importance primary secondary metabolites, including carbohydrates, amino acids, phenolics, phytohormones. A meta-analysis transcriptomic studies concerning model Arabidopsis demonstrates long-observed phenomenon stressors induce different signals effects at level gene expression, but genes whose regulation is similar under most still be traced. analysis further reveals transcriptional modulation Golgi-targeted proteins response heat stress. Our highlights several are similarly regulated all conditions. These support central role phytohormones response, some these has not yet been studied. Finally, provides information about major European crop plants-wheat, sugar beet, maize, potatoes, barley, sunflowers, grapes, rapeseed, tomatoes, apples.

Language: Английский

---

MdNAC104 positively regulates apple cold tolerance via CBF‐dependent and CBF‐independent pathways

Plant Biotechnology Journal, Journal Year: 2023, Volume and Issue: 21(10), P. 2057 - 2073

Published: June 30, 2023

Low temperature is the main environmental factor affecting yield, quality and geographical distribution of crops, which significantly restricts development fruit industry. The NAC (NAM, ATAF1/2 CUC2) transcription (TF) family involved in regulating plant cold tolerance, but mechanisms underlying these regulatory processes remain unclear. Here, TF MdNAC104 played a positive role modulating apple tolerance. Under stress, MdNAC104-overexpressing transgenic plants exhibited less ion leakage lower ROS (reactive oxygen species) accumulation, higher contents osmoregulatory substances activities antioxidant enzymes. Transcriptional regulation analysis showed that directly bound to MdCBF1 MdCBF3 promoters promote expression. In addition, based on combined transcriptomic metabolomic analyses, as well promoter binding transcriptional we found stimulated accumulation anthocyanin under conditions by upregulating expression synthesis-related genes, including MdCHS-b, MdCHI-a, MdF3H-a MdANS-b, increased enzymes promoting enzyme-encoding genes MdFSD2 MdPRXR1.1. conclusion, this study revealed mechanism tolerance via CBF-dependent CBF-independent pathways.

Language: Английский

---

JA-mediated MYC2/LOX/AOS feedback loop regulates osmotic stress response in tea plant

Horticultural Plant Journal, Journal Year: 2023, Volume and Issue: 10(3), P. 931 - 946

Published: Aug. 28, 2023

Osmotic stress caused by low-temperature, drought and salinity was a prevalent abiotic in plant that severely inhibited development agricultural yield, particularly tea plant. Jasmonic acid (JA) is an important phytohormone involving stress. However, underlying molecular mechanisms of JA modulated osmotic response remains unclear. In this study, high concentration mannitol induced accumulation increase peroxidase activity Integrated transcriptome mined signaling master, MYC2 transcription factor shown as hub regulator mannitol, expression which positively correlated with biosynthetic genes (LOX AOS) (PER). CsMYC2 determined nuclei-localized activator, furthermore, Protein-DNA interaction analysis indicated positive activated the CsLOX7, CsAOS2, CsPER1 CsPER3 via bound their promoters, respectively. Suppression resulted reduced content tolerance Overexpression Arabidopsis improved content, plants against Together, we proposed feedback loop mediated CsMYC2, CsLOX7 CsAOS2 constituted to through fine-tuning levels POD

Language: Английский

---

Metabolomics combined with physiology and transcriptomics reveal how Nicotiana tabacum leaves respond to cold stress

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 208, P. 108464 - 108464

Published: Feb. 28, 2024

Language: Английский

---

Utilizing transcriptomics and metabolomics to unravel key genes and metabolites of maize seedlings in response to drought stress

BMC Plant Biology, Journal Year: 2024, Volume and Issue: 24(1)

Published: Jan. 8, 2024

Abstract Background Drought stress can substantially restrict maize growth and productivity, global warming an increasing frequency of extreme weather events are likely to result in more yield losses the future. Therefore, unraveling molecular mechanism underlying response drought is essential for breeding drought-resilient crops. Results In this study, we subjected 3-leaf-period plants two inbred lines, a drought-tolerant line (si287) drought-sensitive (X178), seven days while growing chamber. Subsequently, measured physiological traits analyzed transcriptomic metabolic profiles lines. Our KEGG analysis genes metabolites revealed significant differences pathways related glycolysis/gluconeogenesis, flavonoid biosynthesis, starch sucrose metabolism, biosynthesis amino acids. Additionally, our joint identified proline, tryptophan phenylalanine crucial acids stress. Furthermore, concentrated on (Trp), which was found enhance tolerance via IAA-ABA signaling, as well SA nicotinamide adenine dinucleotide (NAD) consequent reactive oxygen species (ROS) scavenging. We three hub indole-3-acetaldehyde oxidase ( ZmAO1 , 542,228), catalase 1 ZmCAT1 542,369), flavin-containing monooxygenase 6 ZmYUC6 103,629,142), High expression these plays role regulating tolerance. Two quinolinic acid, kynurenine improved by scavenging species. Conclusions This study illuminates mechanisms seedlings Especially, it identifies novel candidate metabolites, enriching understanding The identification distinct resistance lines will facilitate exploration germplasm hybrids.

Language: Английский

---

WRKY Transcription Factor Responses and Tolerance to Abiotic Stresses in Plants

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(13), P. 6845 - 6845

Published: June 21, 2024

Plants are subjected to abiotic stresses throughout their developmental period. Abiotic include drought, salt, heat, cold, heavy metals, nutritional elements, and oxidative stresses. Improving plant responses various environmental is critical for survival perpetuation. WRKY transcription factors have special structures (WRKY structural domains), which enable the different transcriptional regulatory functions. can not only regulate stress growth development by regulating phytohormone signalling pathways but also promote or suppress expression of downstream genes binding W-box [TGACCA/TGACCT] in promoters target genes. In addition, interact with other families defence self-regulate recognising W-boxes own However, recent years, research reviews on roles higher plants been scarce shallow. this review, we focus structure classification factors, as well identification molecular mechanisms involved response stresses, improve tolerance ability under stress, look forward future directions, a view providing theoretical support genetic improvement crop tolerance.

Language: Английский

---

WRKY Transcription Factor Responses and Tolerance to Abiotic Stresses in Plants

Published: June 3, 2024

Plants are subjected to abiotic stresses throughout their developmental period. Abiotic include drought, salt, heat, cold, heavy metals, nutritional element and oxidative stresses. Improving plant response various environmental is critical for survival perpetuation. The WRKY transcription factors have special structure (WRKY structural domains), which enable different transcriptional regulatory functions. can not only regulate growth development by regulating phytohormone signalling pathways, but also promote or suppress the expression of downstream genes binding W-box [TGACCA/TGACCT] in promoters target genes. In addition, interact with other families defence responses stresses, self-regulate recognizing W-boxes own However, recent years, research reviews on roles higher plants scarce shallow. this review, we focus classification factors, as well identification molecular mechanisms involved improve tolerance ability stress look forward future directions, a view providing theoretical support genetic improvement crop tolerance.

Language: Английский

---

OsLPXC negatively regulates tolerance to cold stress via modulating oxidative stress, antioxidant defense and JA accumulation in rice

Free Radical Biology and Medicine, Journal Year: 2023, Volume and Issue: 199, P. 2 - 16

Published: Feb. 10, 2023

Language: Английский

---

Melatonin mitigates cold-induced damage to pepper seedlings by promoting redox homeostasis and regulating antioxidant profiling

Horticultural Plant Journal, Journal Year: 2023, Volume and Issue: 10(2), P. 532 - 544

Published: Feb. 18, 2023

In this study, we assessed the influence of exogenous ME in mitigation cold damage pepper seedlings. Melatonin (ME) is a dynamic molecule that helps plants cope with stress several ways. Cold (CS) one most important environmental factors restrict plant growth and yield. Pepper (Capsicum annuum L.) valuable commercial crop, highly sensitive to CS. Thus, identifying an efficient strategy mitigate critical for long-term production. For purpose, roots seedlings were pretreated (5 μmol L−1) exposed CS 7 d. The present results indicated suppressed growth, hampered photosynthetic capacity, damaged root architecture plants. contrast, production reactive oxygen species (ROS), malondialdehyde (MDA), electrolyte leakage (EL), proline, soluble sugars enhanced under pretreatment reduced negative effects by recovering traits, gas exchange elements, pigment molecules compared control treatment. Furthermore, application efficiently oxidative markers [hydrogen peroxide (H2O2), superoxide ion (O2•–), EL, MDA] while increasing proline sugar content leaves. addition, combined further increased antioxidant enzymes related gene expression. Collectively, our confirmed mitigating potential supplementation maintaining seedling improving photosynthesis apparatus, regulating pigments, osmolyte content.

Language: Английский

---

Dissecting postharvest chilling injuries in pome and stone fruit through integrated omics

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 14

Published: Jan. 3, 2024

Lowering the storage temperature is an effective method to extend postharvest and shelf life of fruits. Nevertheless, this technique often leads physiological disorders, commonly known as chilling injuries. Apples pears are susceptible injuries, among which superficial scald most economically relevant. Superficial due necrotic lesions first layers hypodermis manifested through skin browning. In peaches nectarines, injuries characterized by internal symptoms, such mealiness. Fruits with these aesthetic or compositional/structural defects not suitable for fresh consumption. Genetic variation a key factor in determining fruit susceptibility injuries; however, physiological, technical aspects harvest maturity conditions also play role. Multi-omics approaches have been used provide integrated explanation injury development. Metabolomics pome fruits specifically targets identification ethylene, phenols, lipids, oxidation products. Genomics transcriptomics revealed interesting connections metabolomic datasets, pinpointing specific genes linked cold stress, wax synthesis, farnesene metabolism, metabolic pathways ascorbate glutathione. When applied Prunus species, cutting-edge uncovered that development mealiness symptoms ethylene signaling, cell wall lipid stress genes, increased DNA methylation levels. Emphasizing findings from multi-omics studies, review reports how integration omics datasets can new insights into understanding This information essential successfully creating more resilient varieties developing novel strategies.

Language: Английский

---